Amazon Linux 2 Security Advisory: ALASDOCKER-2023-031
Advisory Release Date: 2023-10-18 16:53 Pacific
Advisory Updated Date: 2024-05-09 18:00 Pacific
FAQs regarding Amazon Linux ALAS/CVE Severity
http2/hpack: avoid quadratic complexity in hpack decoding (CVE-2022-41723)
Templates did not properly consider backticks (`) as Javascript string delimiters, and as such did
not escape them as expected. Backticks are used, since ES6, for JS template literals. If a template
contained a Go template action within a Javascript template literal, the contents of the action could
be used to terminate the literal, injecting arbitrary Javascript code into the Go template. (CVE-2023-24538)
html/template: improper handling of JavaScript whitespace.
Not all valid JavaScript whitespace characters were considered to be whitespace. Templates containing whitespace characters outside of the character set "\t\n\f\r\u0020\u2028\u2029" in JavaScript contexts that also contain actions may not be properly sanitized during execution. (CVE-2023-24540)
Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time verifying signatures. With fix, the size of RSA keys transmitted during handshakes is restricted to <= 8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in circulation with keys larger than this, and all three appear to be test certificates that are not actively deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so causing breakage here in the interests of increasing the default safety of users of crypto/tls seems reasonable. (CVE-2023-29409)
The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023. (CVE-2023-39325)
Affected Packages:
docker
Note:
This advisory is applicable to Amazon Linux 2 - Docker Extra. Visit this page to learn more about Amazon Linux 2 (AL2) Extras and this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update docker to update your system.
aarch64:
docker-20.10.25-1.amzn2.0.3.aarch64
docker-debuginfo-20.10.25-1.amzn2.0.3.aarch64
src:
docker-20.10.25-1.amzn2.0.3.src
x86_64:
docker-20.10.25-1.amzn2.0.3.x86_64
docker-debuginfo-20.10.25-1.amzn2.0.3.x86_64
2025-03-03: CVE-2023-29409 was added to this advisory.
2024-05-09: CVE-2022-41723 was added to this advisory.
2023-11-29: CVE-2023-24538 was added to this advisory.
2023-10-31: CVE-2023-24540 was added to this advisory.